body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  margin: 0;
  padding: 0;
  color: #333;
  min-height: 100vh;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px;
  animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

header, section, footer {
  background: #ffffff;
  border-radius: 20px;
  margin-bottom: 20px;
  padding: 24px;
  box-shadow: 0 12px 35px rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.08);
  transition: all 0.3s ease;
  animation: zoomIn 0.6s ease-out;
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

header:hover, section:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.12);
}

h1, h2 {
  color: #1d4ed8;
  margin-bottom: 16px;
}

h1 {
  font-size: 2.2rem;
  background: linear-gradient(135deg, #1d4ed8, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

ul {
  padding-left: 20px;
}

ul li {
  margin-bottom: 12px;
  transition: all 0.3s ease;
  position: relative;
  padding-left: 5px;
}

ul li::marker {
  color: #3b82f6;
  font-weight: bold;
}

ul li:hover {
  color: #1d4ed8;
  transform: translateX(10px);
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.1), transparent);
  padding-left: 15px;
  border-radius: 5px;
}

form {
  display: flex;
  flex-direction: column;
}

label {
  margin-top: 16px;
  font-weight: 600;
  color: #374151;
  transition: all 0.3s ease;
}

label:hover {
  color: #1d4ed8;
  transform: translateX(5px);
}

input, textarea {
  padding: 16px;
  margin-top: 8px;
  border-radius: 12px;
  border: 2px solid #dbeafe;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #f8fafc;
}

input:focus, textarea:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
  background: #ffffff;
  transform: scale(1.01);
}

button {
  margin-top: 24px;
  padding: 18px 32px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
  border: none;
  border-radius: 16px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s;
}

button:hover::before {
  left: 100%;
}

button:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
}

button:active {
  transform: translateY(-2px);
}

footer {
  text-align: center;
  font-size: 0.9em;
  color: #6b7280;
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

/* 添加波浪动画效果 */
@keyframes wave {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(10px); }
}

header {
  animation: wave 4s ease-in-out infinite;
}

/* 添加旋转动画效果 */
@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

ul li:hover::marker {
  animation: rotate 0.5s ease-in-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 16px;
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
  header, section, footer {
    padding: 20px;
  }
}